It was not until 1920 _____ regular radio broadcasts began.A、whichB、whenC、that

游客2023-10-11 46

问题 It was not until 1920 _____ regular radio broadcasts began.

选项 A、which
B、when
C、that
D、since

答案 C

解析

转载请注明原文地址:https://www.tihaiku.com/zcyy/3090779.html

相关试题推荐

随机试题

最新回复(0)